chore: improve propagator doc (#2102)

make PDG explicit and improve doc a little
acts-project · May 9, 2023 · 6e613f0 · 6e613f0
1 parent 65b6de0
commit 6e613f0
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/Core/include/Acts/Propagator/Propagator.hpp b/Core/include/Acts/Propagator/Propagator.hpp
@@ -23,6 +23,7 @@
 #include "Acts/Propagator/StepperConcept.hpp"
 #include "Acts/Propagator/detail/VoidPropagatorComponents.hpp"
 #include "Acts/Utilities/Logger.hpp"
+#include "Acts/Utilities/PdgParticle.hpp"
 #include "Acts/Utilities/Result.hpp"
 
 #include <optional>
@@ -58,10 +59,12 @@ struct PropagatorPlainOptions {
   /// Propagation direction
   Direction direction = Direction::Forward;
 
-  /// The |pdg| code for (eventual) material integration - pion default
-  int absPdgCode = 211;
+  /// The |pdg| code for (eventual) material integration -
+  /// pion default
+  int absPdgCode = PdgParticle::ePionPlus;
 
-  /// The mass for the particle for (eventual) material integration
+  /// The mass for the particle for (eventual) material integration -
+  /// pion default
   double mass = 139.57018 * UnitConstants::MeV;
 
   /// Maximum number of steps for one propagate call